scalar extension

例句：

1. 1. The scalar extension of the function is determined by its domain and codomain.
   函数的标量扩展由其域和共域决定。
2. 2.In linear algebra, scalar extensions are used to extend a vector space to another vector space.
   在线性代数中，标量扩展用于将一个向量空间扩展到另一个向量空间。
3. 3. The scalar extension of the matrix is calculated using the formula for the determinant of a matrix.
   矩阵的标量扩展通过计算矩阵行列式的公式来计算。